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Service bulletins for the 2020 Kia Telluride

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

152 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
SC357_TSB2026-03-02. Service bulletin. ELECTRICAL SYSTEM; ENGINE. TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: ECU EMISSIONS SOFTWARE LOGIC IMPROVEMENT (SC357) - This bulletin provides information to upgrade the Engine Control Unit (ECU) system software to improve the emissions-related logic on 2020-2025MY Telluride (ON) vehicles equipped with the Lambda II 3.8L GDI engine, produced from January 9, 2019 through October 27, 2025. The subject vehicles may have engine calibrations that were not optimized for emissions standards under certain specific conditions, which may cause the vehicle to release air pollutants which exceed Federal and California standards.
SC357_OWNR2026-02-26. Emissions. ENGINE; ELECTRICAL SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION (SC357) - This document is the owner notification advising that Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module (ECM) for 2020-2025 MY Telluride vehicles to ensure compliance with emissions regulations.
SC357_STKR2026-02-12. Emissions. ENGINE; ELECTRICAL SYSTEM. SC357_STKR: VOLUNTARY EMISSIONS SERVICE CAMPAIGN COMPLETION LABEL/STICKER
SC357_POC2026-02-12. Emissions. ENGINE; ELECTRICAL SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: SC357_POC: PROOF OF CORRECTION CARD
SC357_QA2026-02-12. Emissions. ELECTRICAL SYSTEM; ENGINE. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: QUESTION AND ANSWER (SC357) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Emissions Service Campaign SC357.
SC357_DPSM2026-02-12. Emissions. ENGINE; ELECTRICAL SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC357) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module (ECM) to ensure compliance with emissions regulations for 2020-2025 MY Telluride vehicles manufactured from January 9, 2019 through October 27, 2025.
SC357_DP2026-02-12. Emissions. ELECTRICAL SYSTEM; ENGINE. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC357) - This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module (ECM) to ensure compliance with emissions regulations for 2020-2025 MY Telluride vehicles manufactured from January 9, 2019 through October 27, 2025.
PS7932025-08-05. Service bulletin. ELECTRICAL SYSTEM. This Pitstop provides information regarding an inoperative sunroof switch on 2020–2025MY Telluride (ON) vehicles. When diagnosing a vehicle for this condition, check that connectors R02 and R03 are connected in the correct cavities. If these connectors were previously interchanged unintentionally, the sunroof switch will not operate.
TSB_ELE3782025-03-26. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: KIA CONNECT MODEM RESET (SA611) - This bulletin outlines the procedure for resetting the modem in certain 2016-2025MY Kia vehicles listed on page 3 that are equipped with Kia Connect Services. The affected vehicles may encounter the following issues: remote Start/Climate Control function not working, vehicle Status on the Kia Access App not updating, connected routing not functioning properly.
TSB_ELE3612024-12-11. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: AVN 5.0 WIDE DEALER MODE FACTORY RESET - This bulletin provides the procedure to perform the ‘Dealer Mode Factory Reset’ on multiple 2020-2021MY vehicles (listed on page 5) equipped with AVN 5.0 Wide head units. The affected vehicles may exhibit inoperable and/or interrupted Kia Connect services due to a logic error with the current software version. This logic error may affect the Kia Connect services: calendar, weather, sports, vehicle diagnostics, maintenance and/or Kia Connect services rendering these features inoperable.
SC301Y_TSB2024-07-31. Service bulletin. VEHICLE SPEED CONTROL; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SUBSEQUENT REPAIR ACTION: WHEEL SPEED SENSOR REPLACEMENT (SC301Y) - This bulletin provides information related to the Technical Service Bulletin previously published under SC301, titled “WSS Software Upgrade”.
SC301_OWNR2024-05-23. Service campaign. SERVICE BRAKES; ELECTRICAL SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION (SC301) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign to inspect and, if necessary, replace the wheel speed sensor(s) in certain 2020-2024 MY Telluride vehicles. Kia will also update the Hydraulic Electronic Control Unit (HECU) software with improved logic.
SC301_TSB2024-05-23. Service campaign. ELECTRICAL SYSTEM; SERVICE BRAKES. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: WSS SOFTWARE UPGRADE (SC301) - This bulletin provides information to update the Wheel Speed Sensor (WSS) software on certain 2020-2024MY Telluride (ON) vehicles manufactured from January 9, 2019 through March 10, 2024.
SC301_QA2024-05-15. Service campaign. SERVICE BRAKES; ELECTRICAL SYSTEM. VOLUNTARY SERVICE CAMPAIGN: QUESTION AND ANSWER (SC301) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign SC301.
TSB_ELE303_R22024-03-02. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: AVN 5.0 WIDE NON-RESPONSIVE RADIO ICON (AM, FM, SXM) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to update the software on 5th Generation AVN wide on certain 2020-2024MY Kia vehicles (refer to model list on page 3) to remedy a 'non-responsive' or 'inoperative' radio (FM, AM, SXM, etc. ) concern. The affected AVN unit on the vehicles may not respond when pressing the 'RADIO' hard key/button on the AVN unit or when selecting the 'RADIO' icon on the AVN menu screen.
TSB_CLI0552024-02-02. Service bulletin. VISIBILITY; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: DATC HEATER OPERATION LOGIC IMPROVEMENT - This bulletin provides information to upgrade the air condition (AIRCON) software logic on certain 2020-2023MY Telluride (ON) vehicles equipped with Dual Air Temperature Control (DATC), produced from January 9, 2019 through June 6, 2023. The affected vehicles may exhibit temporarily reduced heater performance in cold climates, especially during prolonged idle operation or coasting.
TSB_ELE3202024-01-06. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: AVN 5.0 WIDE SCREEN FREEZING OR MAP DELAY WITH WIRED APPLE CARPLAY - This bulletin provides information to update the software on 5th Generation AVN wide on certain 2020-2023MY Kia vehicles to remedy an inaccurate map location, freezing AVN screen, or experiencing a delay when using Google Maps or Waze through wired Apple CarPlay.
TSB_ELE3142023-11-04. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: UNEVEN/SLIPPERY ROAD WARNING DISPLAYED ON INSTRUMENT CLUSTER - This bulletin provides information to update the software on 5th Generation AVN wide on certain 2020-2023MY Kia vehicles (refer to model list on page 3) to remedy a warning sound accompanied by a 'Slippery road ahead. Drive carefully' or 'Uneven road ahead. Drive carefully' warning which is displayed on the instrument cluster. The current AVN software causes the warning sound and message to repeat approximately every ten (10) seconds, if the vehicle is not in motion, in 'PARK' or driving on even surfaces.
TSB_ELE209_R42023-08-24. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SERVICE REMINDER SETTING RESET PROCEDURE - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information regarding the service reminder setting, which may have been auto-set by the Kia Vehicle Inspection and Delivery application (KVID) at time of Pre-Delivery Inspection (PDI). Beginning with the 2023MY, Oil Life Monitoring (OLM) has been applied to all models, except Forte (BDm), Stinger (CK), Telluride (ON) and Soul (SK3). Refer to TSB ENG241 for additional information. As of 08/11/2023, the service reminder auto-set feature by KVID has been disabled for ALL models NOT equipped with OLM.
WTY030_TSB_R12023-07-05. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: HALOGEN HEADLAMP REPLACEMENT - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information associated with the 'Halogen Headlamp High Beam Warranty Extension Program' (WTY030) to replace the affected (left and/or right side) headlamp assembly on certain 2020MY Telluride (ON) LX/S/EX vehicles, produced at Kia Georgia from January 09, 2019 through November 18, 2019, which may exhibit a loss of high-beam functionality. Due to an internal failure in the headlamp, the high beam lights may not illuminate when turning the light switch from the low to high beams. The low-beam function is not affected. The vehicle’s warranty for this issue will be extended from 5 years/60,000 miles to 15 years/150,000 miles, whichever comes first, starting from the date the vehicle was first put into service.
WTY030_OWNR2023-04-28. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. WARRANTY EXTENSION: OWNER NOTIFICATION - This document is the owner notification advising that Kia is extending the New Vehicle Limited Warranty coverage for the halogen headlamp assembly in certain 2020 MY Telluride LX/S/EX vehicles from 5 years / 60,000 miles to 15 years / 150,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension addresses, at no cost to you, the potential failure of the halogen headlamp assembly, which may cause a loss of high beam functionality.
WTY030_REIMB2023-04-28. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. WARRANTY EXTENSION: REIMBURSEMENT FORM - This document is a Reimbursement Request form that was mailed with the customer letter advising them to submit the form if they had paid for repairs for this same matter prior to the warranty extension program launch.
WTY030_QA2023-04-28. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. WARRANTY EXTENSION: QUESTION AND ANSWER - This document is the Question and Answer Guide containing the most frequently asked questions regarding the warranty extension (WTY030).
WTY030_DPSM2023-04-28. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. WARRANTY EXTENSION: DEALER PARTS AND SERVICE MANAGER MEMO - This document is the announcement to the dealer Parts and Service Managers that Kia is extending the New Vehicle Limited Warranty coverage for the halogen headlamp assembly in certain 2020 MY Telluride LX/S/EX vehicles from 5 years / 60,000 miles to 15 years / 150,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension addresses, at no cost to the customer, the potential failure of the halogen headlamp assembly, which may cause a loss of high-beam functionality.
WTY030_DP2023-04-28. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. WARRANTY EXTENSION: DEALER PRINCIPAL MEMO -This document is the announcement to the dealer principals that Kia is extending the New Vehicle Limited Warranty coverage for the halogen headlamp assembly in certain 2020 MY Telluride LX/S/EX vehicles from 5 years / 60,000 miles to 15 years / 150,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension addresses, at no cost to the customer, the potential failure of the halogen headlamp assembly, which may cause a loss of high-beam functionality.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.